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Geomagnetic activity in April 1984
Mean Ap25.3No. 58 of 1138
G1+ days15
G3+ days3
Max Ap10326 Apr 1984
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Apr 1984 | 5o | 34 | G1 |
| 2 Apr 1984 | 6- | 46 | G2 |
| 3 Apr 1984 | 5+ | 42 | G1 |
| 4 Apr 1984 | 8- | 84 | G4 |
| 5 Apr 1984 | 6+ | 57 | G2 |
| 7 Apr 1984 | 6o | 25 | G2 |
| 8 Apr 1984 | 6+ | 58 | G2 |
| 9 Apr 1984 | 7+ | 37 | G3 |
| 14 Apr 1984 | 5+ | 18 | G1 |
| 20 Apr 1984 | 5o | 20 | G1 |
| 25 Apr 1984 | 6o | 33 | G2 |
| 26 Apr 1984 | 8- | 103 | G4 |
| 27 Apr 1984 | 5+ | 26 | G1 |
| 29 Apr 1984 | 5- | 18 | G1 |
| 30 Apr 1984 | 5- | 9 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| April 1983 | 24.0 | 16 | 1 |
| April 1984 | 25.3 | 15 | 3 |
Dates and time slots are UTC. Kp is the 3-hourly planetary geomagnetic index (0–9); Ap is the daily average disturbance. G1–G5 follow the NOAA storm scale (Kp 5- and above counted as G1). Aurora visibility also depends on weather and location. The latest values are preliminary.
About this page
Mean Ap 25.3 in April 1984, No. 58 of 1138 months since 1932; 15 days reached G1 or higher.